../ dmsp_15_ephemeris_20250331.txt 09-May-2025 22:00 108193 dmsp_16_ephemeris_20250331.txt 09-May-2025 22:00 108241 dmsp_17_ephemeris_20250331.txt 09-May-2025 22:00 108177 dmsp_18_ephemeris_20250331.txt 09-May-2025 22:00 108272